Went down and looked at it again. I wasn't thinking new water level when looking for spillway location but it appears it should work fine. Length is around 320, width 70. Elevation change now around 20'.
Looking downslope toward where dam will be.
Looking upslope from where dam will be.
Looking downslope from dam toward neighbors pond.
Spillway will probably end up being in slope on right side of dam spot (picture looking toward neighbors pond). The area is nice and "roundish" in the upslope area and then narrows down like a funnel toward the dam.
